//
//  NSDictionary+ForNSNull.h
//  XueLeTS
//
//  Created by Sheldon huang on 12/7/15.
//  Copyright © 2015 net.xuele. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSDictionary(forNSNull)
- (id)objectForKeySafely:(id)aKey;
@end

@interface NSNull(forNSDictionary)
- (id)objectForKeySafely:(id)aKey;
@end

@interface NSString(forEmpty)

-(BOOL)isEmpty;

@end

@interface NSMutableDictionary (SafeValue)

- (void)setSafeObject:(id)anObject forKey:(id<NSCopying>)aKey;

@end
